nginx-custom-counters-module version 2.2
More fixes and improvements in implementation of persistent counters.
- Now relative path in directive counters_persistent_storage means that the counters will be loaded and stored in the Nginx prefix directory.
- Always set correct permissions for the backup storage file such that worker processes can write into it.
- Do not try to reopen inexistent main storage file on backup copy failure.
- Skip parsing empty persistent storages.